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Homomorphisms of 2-edge-colored graphs

Abstract : In this paper, we study homomorphisms of 2-edge-colored graphs, that is graphs with edges colored with two colors. We consider various graph classes (outerplanar graphs, partial 2-trees, partial 3-trees, planar graphs) and the problem is to find, for each class, the smallest number of vertices of a 2-edge-colored graph H such that each graph of the considered class admits a homomorphism to H.
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-00433039
Contributor : Alexandre Pinlou <>
Submitted on : Wednesday, November 18, 2009 - 7:19:48 AM
Last modification on : Wednesday, September 16, 2020 - 4:54:16 PM

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Amanda Montejano, Pascal Ochem, Alexandre Pinlou, André Raspaud, Eric Sopena. Homomorphisms of 2-edge-colored graphs. Discrete Applied Mathematics, Elsevier, 2010, 158 (12), pp.1365-1379. ⟨10.1016/j.dam.2009.09.017⟩. ⟨lirmm-00433039⟩

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